APA Style
Ragland, John, Lal, Ruttan. (1993).
Technologies for sustainable agriculture in the tropics .
Madison, Wisconsin:
American Society of Agronomy.
Chicago Style
Ragland, John, Lal, Ruttan.
Technologies for sustainable agriculture in the tropics.
Madison, Wisconsin:
American Society of Agronomy,
1993.
Text.
MLA Style
Ragland, John, Lal, Ruttan.
Technologies for sustainable agriculture in the tropics.
Madison, Wisconsin:
American Society of Agronomy,
1993.
Text.
Turabian Style
Ragland, John, Lal, Ruttan.
Technologies for sustainable agriculture in the tropics.
Madison, Wisconsin:
American Society of Agronomy,
1993.
Print.